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오승인(Seungin Oh),박다은(Daeun Park),백현우(Hyunwoo Baek),김승훈(Seunghun Kim),이재경(Jai-Kyung Lee),김진균(Jin-Gyun Kim) 한국소음진동공학회 2020 한국소음진동공학회 논문집 Vol.30 No.2
Virtual sensing complements limited real-sensing information using a numerical (or analytical) model that is created with measured data. In this work, we propose a virtual-sensing system for structural vibration. Finite element model updating is employed to calibrate the numerical model to the real model and output modal information, including damping coefficients. A reduced-order modeling technique and a modified time integrator are also used to reduce the computational burden in the online sensing process and synchronize the numerical model to the real model, thereby creating a model-based digital twin. The proposed virtual sensing is tested by implementing it to solve a cantilever beam problem.